Developer Guide

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Using -gtool for Debugging

The
-gtool
runtime option can help you with debugging, when attaching to several processes at once. Instead of attaching to each process individually, you can specify all the processes in a single command line. For example:
$ mpirun -n 16 -gtool "gdb:3,5,7-9=attach" ./myprog
The command line above attaches the GNU* Debugger (GDB*) to processes 3, 5, 7, 8 and 9.

See Also

Intel® MPI Library Developer Reference, section
Command Reference > Hydra Process Manager Command > Global Options > gtool Options

Product and Performance Information

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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.